Peter Greenberg (left) interviews Randy Johnson during summer 2011 when Greenberg featured Randy's book "Best Easy Day Hikes Great Smoky Mountains National Park." Peter interviewed Randy at the Harrah's Cherokee Casino in Cherokee North Carolina, the major eastern Gateway town to Great Smoky Mountains National Park.

Peter Greenberg Worldwide Radio featured the Traveler's well-received Essential Friends magazine in late June. Have a listen.

Award-winning travel journalist Peter Greenberg, travel editor for CBS News, interviewed Traveler's travel editor and I was happy to tell him about the critically important work done by the friends, foundations, and trusts who've stepped up to improve and preserve our parks while federal funds decline.

Give it a listen, then download the magazine to learn how you can help. Essential Friends is also packed with insider tips about enjoying eight of the nation's quintessential national parks—advice straight from the local friends groups who know the parks so intimately.